Who's the biggest Apple retailer in the U.S.? If you guessed Apple itself, Michel Suissa of The Studio-B&H says you should guess again. He talks about trends in 4K acquisition and post-production including a 4K-compatible production dailies system from Bigfoot Mobile built around a Mac Pro and an Assimilate Scratch system running on an HP workstation that can do dual-stream 4K in real time.